Science Exam 2011

FatRat

Slow show, I'm positive that they would accept radiation as an answer aswell as conduction. I did conduction but radiation would have been right too.
As long as you said that the white cup doesn't give off much heat through radiation, but it still gives off some. Because of this it would take ages for the water to get hot, but it would eventually. You'd probably get a lot of the marks for it. Obviously conduction is the more obvious one, but you have a point. Radiation would also heat the water in cup B. But only by a small bit.

Slow Show

I don't think I deserve any marks tbh, didn't read the question properly at all and made no reference to different colours. it's my own fault, I should have known to read every question so carefully. I'm hoping it won't cost me that A I want so badly but meh.

Out of curiosity, what was going on with that magnesium question? Hopeful I got lucky and got it right.

phenomenale

Slow Show wrote: »

I don't think I deserve any marks tbh, didn't read the question properly at all and made no reference to different colours. it's my own fault, I should have known to read every question so carefully. I'm hoping it won't cost me that A I want so badly but meh.

Out of curiosity, what was going on with that magnesium question? Hopeful I got lucky and got it right.

I said that the compound was magnesium oxide. And the thing about the mass was that the magnesium reacted with the oxygen in the air thus forming an oxide layer and increasing it's mass.

FatRat

phenomenale wrote: »

I said that the compound was magnesium oxide. And the thing about the mass was that the magnesium reacted with the oxygen in the air thus forming an oxide layer and increasing it's mass.

That's right.

I guessed. I said the mass increased "because of the gas in it" hopefully I'll get 3/9 :cool:
As for the other two. Complete guesses. I said charcoal for what it created. :pac:

Slow Show

Yeah I was completely dumbfounded and said something about expanding on heating. I did say magnesium oxide though, so 3/9. :cool: Should have thought about it corroding, ah well. Waiting for the exam papers to come online so I can tot up marks and calm myself, looking back I suppose I didn't do too horribly.

scipsss

HARD

FatRat

I have the english version of my test here, because I did it through irish.

Looks like this is what I got: (I deducted a few marks for the waste management and plastics questions just because I might have lost a few marks in them)

Biology - 115
Chemistry - 106
Physics - 109
330/390 and with the irish bonus I'd get close to 350. :cool:

All I need is a good coursework B. It's funny, because, yesterday, I thought I was gonna go in and get about a C.
Not a lot about plants was good. Ionic bonding and atoms and all that stuff was crap, I was planning on guessing all of that if it came up and then I get 2 pages of it :rolleyes: All the stuff about the environment was nice since a lot of it is common sense.

I think I'll leave science at that! Happy enough with it overall.

cathalio11

Guys, I said Magnesium DIoxide instead but gave the exact same reason and all, just got the name wrong. Will they slam me much for that?

Indiego

FatRat wrote: »

Few questions:

What are the two sub-sets of an element?

What was the thing about after the blood passes through the cappiliraies in the lungs what happens to it. I said, it mixes with O2, mixes with water and mixes with more red blood cells. Is this right? I think mixing with O2 is right, but what about water and red blood cells?

For the one with the hair rising on your man. I wrote "Because of static electricity" I didn't write anything about electrons. Would this be enough for the question?

For the question on the placenta, what does it do? I said the embryo grows on it and it acts like a cushion for the baby. Is that right?

For the magnet one about finding out which sid of it is the north side, I said put one side next the a compass and the compass should point to what side that is. Probably wrong, but is it?

And for the cup one, I got it right alright, but I said that A will cool down and B will get hot. B will get hot because the copper will get hot and then it will heat up B. But I said, since a is hot already, it will eventually cool down because it's exposed to the air. Is that right?

And..... for the animal cell, when it asked name an important structure in the nucleus, I said chromosomes, is that right?

The bio-degradable bottles one threw me off. I said it would upset habitats and if animals ate them, they could get sick and die :pac: Any chance of that being right?

Anyone who answers all these question, I'll give ye a million a euro.
I thought the very first question was the hardest, it the only one i couldn't even make a guess with .... threw down tuna in the end cuz I'm a mad bastard. :pac:

Subsets of elements - Metals, Nonmetals
Blood - I said that it was high in co2 and low in oxygen entering the lungs, but had little co2 and was oxygenated when exiting
Hair thingy question - I kind of winged it on the question, but my teacher says im right so yay :L i said that the hair became positivly and negatively charged, causing them to repel eachother, and then at the end i just mentioned it was static electricity
Placenta - I said that it delivers oxygen in the blood to the baby along with nutrients from the mothers diet needed for development and that it cushions it
Copper and cups - yep, youre most definately right
Cells - I also said chromosomes
Plastics - I said something quite similar to you, so hopefully its right :L and i also mentioned that if plastics are burned they can release harmful emmisions
For the first question i said eggs and poultry Home ec FTW ^^

P H A 7V T O M

The correct answers could have been Chromosomes, DNA or even "genes" though that last one is a bit simple....

For the one on the hot air baloon, the answer was "because the gas used within the baloon is less dense than air, so it rises" correct?

I said oils or butter on the first one. The only one I really think i got wrong

Indiego

P H A 7V T O M wrote: »

The correct answers could have been Chromosomes, DNA or even "genes" though that last one is a bit simple....

For the one on the hot air baloon, the answer was "because the gas used within the baloon is less dense than air, so it rises" correct?

I said oils or butter on the first one. The only one I really think i got wrong

Well the same gas is used inside the baloon than outside it, i.e Air
I said that it rose because how air is less dense than cold air and so it rose ^^

phenomenale

cathalio11 wrote: »

Guys, I said Magnesium DIoxide instead but gave the exact same reason and all, just got the name wrong. Will they slam me much for that?

My guess would be that they would give it to you. They're usually not too hung up on things like that.

P H A 7V T O M

Indiego wrote: »

Well the same gas is used inside the baloon than outside it, i.e Air
I said that it rose because how air is less dense than cold air and so it rose ^^

Well I *think* my answer is still legit - the air, because it's heated, IS less dense, which supports the answer, hopefully that stillmeans full marks.

The gas the balloon uses to heat is propane, which acts upon compressed air very quickly, if anyone was interested... :S

phenomenale

P H A 7V T O M wrote: »

Well I *think* my answer is still legit - the air, because it's heated, IS less dense, which supports the answer, hopefully that stillmeans full marks.

Damn.. I should have thought of that. I just said because heat rises in air. Wonder if I'll get anything..

Lucan Bohs

Online now- http://www.examinations.ie/archive/exampapers/2011/JC045ALP000EV.pdf

Joe95

For the air balloon one, I put 'air rises when it's heated', hopefully I'll get marks on that.

P H A 7V T O M

phenomenale wrote: »

Damn.. I should have thought of that. I just said because heat rises in air. Wonder if I'll get anything..

Heat does rise in air, (technically heat causes the air to rise) as it does with any gas, so you are somewhat correct. There wasnt enough space to conduct analysis etc., you should get marks.

Joe95

P H A 7V T O M wrote: »

Heat does rise in air, (technically heat causes the air to rise) as it does with any gas, so you are somewhat correct. There wasnt enough space to conduct analysis etc., you should get marks.

I was going to go into more detail about it saying how 'there's a fire underneath somewhere which causes heat particles go up to the balloon making the air inside the balloon less dense and making the air inside expand because it's heated', you get what I mean. :P But yeah, there was only 2 or something lines and I didn't want to write anything on the back of the extra work, lol.

phenomenale

P H A 7V T O M wrote: »

Heat does rise in air, (technically heat causes the air to rise) as it does with any gas, so you are somewhat correct. There wasnt enough space to conduct analysis etc., you should get marks.

You're such a comfort

P H A 7V T O M

phenomenale wrote: »

You're such a comfort

Lol cheers, I'm just helping out I guess.

ThisIsMySeat

Q: Each hydrogen atom shares two electrons with the oxygen atom.
What name is given to the type of bonding that involves the sharing
of pairs of electrons?

Does this make it a covalent bond, or a double covalent bond?

And about the Q where you had to give the unit for pressure, is it Pa or Pascals? I just said Pa ...

Thanks

scipsss

iv estimated and i think im on the verge between a b and just getting an a.. i just hope i did enough to get the A

flump_master

If it's of any comfort to anyone you can lose up to 58 marks on the written paper and still get an A, or up to 90 overall. So don't rule yourself out too early

Slow Show

flump_master wrote: »

If it's of any comfort to anyone you can lose up to 58 marks on the written paper and still get an A, or up to 90 overall. So don't rule yourself out too early

You can lose 90 if your project merits full marks, I worked really hard on my project so I'm hoping I've left myself able to lose 70/80 marks, and however disappointed I am, I don't think I lost that much. September is so far away.

flump_master

Or lose 20 on your project and 70 on your written and so on and so forth.. And same here on the project- I didnt do anything horrible today but I lost some stupid marks

fabulousdiva

guys do you realise that on the SEC website the exam is under 1989 syllabus..? i thought we do revised syllabus?!

rorrissey

I did awful! :pac:

Lucan Bohs

ThisIsMySeat wrote: »

Q: Each hydrogen atom shares two electrons with the oxygen atom.
What name is given to the type of bonding that involves the sharing
of pairs of electrons?

Does this make it a covalent bond, or a double covalent bond?

And about the Q where you had to give the unit for pressure, is it Pa or Pascals? I just said Pa ...

Thanks

I said covalent

Joe95

ThisIsMySeat wrote: »

Q: Each hydrogen atom shares two electrons with the oxygen atom.
What name is given to the type of bonding that involves the sharing
of pairs of electrons?

Does this make it a covalent bond, or a double covalent bond?

And about the Q where you had to give the unit for pressure, is it Pa or Pascals? I just said Pa ...

Thanks

I said covalent, but then again I just guessed it, lol.

matthew8

fabulousdiva wrote: »

guys do you realise that on the SEC website the exam is under 1989 syllabus..? i thought we do revised syllabus?!

An error on their part titling it the wrong way.

P H A 7V T O M

rorrissey wrote: »

I did awful! :pac:

I wouldn't worry too much. The experiments and project will be more than enough to take you up at least a grade if you put in some sort of effort.

The exam required more "Critical Thinking" than prev. years I thought.

Like I said, don't worry. Just chill out for 3 months or whatever, then feel nervous when you begin to open the letter.... Works for me anyway

Slow Show

I agree about the 'Critical Thinking'. I'd consider myself to be kinda good at that, but I thought a lot of questions were more straightforward than they actually were, and got ahead of myself...I think doing all the exam papers in school, including the sample papers, made me too aware of how questions were asked. Looking back at the questions I didn't get, if I'd been more careful and really thought it through, I could have applied most of what I'd learned from the course and got better answers. But look, it's in the past now, I won't know how I did until September, and I'll be weary of that for Leaving Cert.

phenomenale

P H A 7V T O M wrote: »

I wouldn't worry too much. The experiments and project will be more than enough to take you up at least a grade if you put in some sort of effort.

The exam required more "Critical Thinking" than prev. years I thought.

Like I said, don't worry. Just chill out for 3 months or whatever, then feel nervous when you begin to open the letter.... Works for me anyway

So full of wisdom :rolleyes:

Lucan Bohs

No more chemistry or physics for me again :D

omg a kitty

Joe95 wrote: »

For the air balloon one, I put 'air rises when it's heated', hopefully I'll get marks on that.

Youll get most of the marks
Hot air rises and cold air falls, because hot air is lighter than cold air. Therefore when the air in the balloon is heated, the air wants to rise causing the balloon to fly rise:)

matthew8

omg a kitty wrote: »

Youll get most of the marks
Hot air rises and cold air falls, because hot air is lighter than cold air. Therefore when the air in the balloon is heated, the air wants to rise causing the balloon to fly rise:)

I think he'll get all marks there. There were only 2 lines to write the answer

Desire.

Is said the hot air rises as it is less dense than the cold air.

Full marks?

FunkyOxygen

Question:
p.s i'm TERRIBLE at science so i'm not ripping the piss or being sarcastic but you know the question about the resin thing? and it was like how would you know resin is hard or something i answered because most resin is hard eg cannabis resin. is that right?

Desire.

FunkyOxygen wrote: »

Question:
p.s i'm TERRIBLE at science so i'm not ripping the piss or being sarcastic but you know the question about the resin thing? and it was like how would you know resin is hard or something i answered because most resin is hard eg cannabis resin. is that right?

No. :P

The question was how would you know if the water at the bottom was hard or soft?

The answer was soft and it can be proved by adding soap to it, and it will easily form a lather.

FunkyOxygen

Desire. wrote: »

No. :P

The question was how would you know if the water at the bottom was hard or soft?

The answer was soft and it can be proved by adding soap to it, and it will easily form a lather.

Oh great! well atleast i did well in the rest so im guranteed an A NOT!! thanks for the help though

FatRat

What about because gas develops and grows when heated?

That's what I said. I'm nearly sure it's right, I suppose I should have mentioned hot air rising alright. But hot air develops should be alright. #

(Also, it's phrased much better in the actually exam by me. I didn't actually say "developed" I did it in Irish and I just can't think of how to phrase it in English.

matthew8

Desire. wrote: »

No. :P

The question was how would you know if the water at the bottom was hard or soft?

The answer was soft and it can be proved by adding soap to it, and it will easily form a lather.

What compound makes hard water? I know calcium does so chose calcium chloride as compound (Because I know that chlorine is related to water) but my book says calcium carbonate. Would calcium chloride be acceptable?

Desire.

matthew8 wrote: »

What compound makes hard water? I know calcium does so chose calcium chloride as compound (Because I know that chlorine is related to water) but my book says calcium carbonate. Would calcium chloride be acceptable?

I also learned calcium but so I said calcium chloride. I think it's right because tap water is hard water and that goes through chlorination, so there would be chlorine in it?

Slow Show

I only ever learned about calcium and magnesium ions, so despite knowing it's not a compound, I wrote Ca+2 and was told I might get marks for it. Kindaa doubt it seeing as it's technically wrong but I live in hope.

matthew8

Just looked at the paper and totted up what I think I got:
Question 1: 34/52
Question 2: 33/39
Question 3: 27/39
Question 4: 43/52
Question 5: 33/39
Question 6: 36/39
Question 7: 34/52
Question 8: 36/39
Question 9: 36/39

So some very bad questions while some very good, total 312/390 and if what I was told about the marking of coursework is true I won't lose any marks there but I can afford to lose around 12.

For the light bulbs question, do washing machines have efficiency ratings?

Desire.

matthew8 wrote: »

For the light bulbs question, do washing machines have efficiency ratings?

I hope so, that's what I said. :pac:

P H A 7V T O M

Desire. wrote: »

I hope so, that's what I said. :pac:

http://lmgtfy.com/?q=do+washing+machines+have+energy+ratings%3F

robman60

Decent exam I think, but it definitely tried to focus more on questions which required a knowledge of the syllabus, but applied in a different way. Good idea I think.

Slow Show

I'm doing my predicted marks too because I'm an insane freak who spends obscene amounts of time totting up marks.

Question 1: 43/52
Question 2: 36/39*
Question 3: 39/39
Question 4: 49/52
Question 5: 33/39
Question 6: 33/39
Question 7: 40/52
Question 8: 39/39
Question 9: 27/39

Which equals 339/390, there's probably a margin of error of around 10 each away. 329 is just below an A, 349 is greaaat. But with a project and experiments at around 190, hopefully, that gets me the A.
Or I could be far too optimistic and in reality I did much worse. Mhmmm.


*(might have got 39/39 but I'm being hard on myself regarding one question)

robman60

For the question on water hardness could you have said the experiment with the soap lather for the question "How would you test between hard and soft water?" and "How would you prove this water is soft?"